The cover image shows four vector flow maps of the jugular vein (top) and the common carotid artery (CCA) (bottom) of a heathy volunteer. Each frame was obtained by the elaboration of 2 consecutive high-frame-rate images according to the 2-D displacement estimation algorithm, operating in the frequency domain, which is described in the accompanying paper. The flow maps were obtained at four different phases of the cardiac cycle, spaced 50 ms apart: end diastole (t1 ), systolic peak (t2 ), systolic deceleration (t3 ), and diastole (t4 ). The third map, in particular, highlights the M-shape of the spatial velocity profiles, resulting from the presence of consistent secondary flow. The bottom panel shows the temporal evolution of the two velocity components estimated in the CCA center. For further reading, please see the article on page 1504 of this issue. Images courtesy of Matteo Lenge, Alessandro Ramalli, Enrico Boni, and Piero Tortoli from the Department of Information Engineering, Università degli Studi di Firenze, Florence, Italy, and Hervé Liebgott, and Christian Cachard from Université de Lyon; CNRS UMR5220; INSERM U1044; Université Lyon 1; INSA-Lyon, Villeurbanne, France.
High Frame Rate Vector Flow Maps With Frequency Domain Displacement Estimation / M.Lenge; A.Ramalli; E.Boni; H.Liebgott; C. Cachard; P.Tortoli. - In: IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL. - ISSN 1525-8955. - STAMPA. - (2014), pp. c1-c2. [10.1109/TUFFC.2014.3054]
High Frame Rate Vector Flow Maps With Frequency Domain Displacement Estimation
LENGE, MATTEO;RAMALLI, ALESSANDRO;BONI, ENRICO;TORTOLI, PIERO
2014
Abstract
The cover image shows four vector flow maps of the jugular vein (top) and the common carotid artery (CCA) (bottom) of a heathy volunteer. Each frame was obtained by the elaboration of 2 consecutive high-frame-rate images according to the 2-D displacement estimation algorithm, operating in the frequency domain, which is described in the accompanying paper. The flow maps were obtained at four different phases of the cardiac cycle, spaced 50 ms apart: end diastole (t1 ), systolic peak (t2 ), systolic deceleration (t3 ), and diastole (t4 ). The third map, in particular, highlights the M-shape of the spatial velocity profiles, resulting from the presence of consistent secondary flow. The bottom panel shows the temporal evolution of the two velocity components estimated in the CCA center. For further reading, please see the article on page 1504 of this issue. Images courtesy of Matteo Lenge, Alessandro Ramalli, Enrico Boni, and Piero Tortoli from the Department of Information Engineering, Università degli Studi di Firenze, Florence, Italy, and Hervé Liebgott, and Christian Cachard from Université de Lyon; CNRS UMR5220; INSERM U1044; Université Lyon 1; INSA-Lyon, Villeurbanne, France.
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